Why geer score is good

My geer is just to good for me to carry people through stuff like raids. I need at least a 5000 score to do 5 man with me cuz i don't need to waste time on things like people that are bad geered. It is an accuracy sessment of how skilled this person is or is not.

I think blizzard should implament this into the default ui if not to save everyone some time and stress.